Separate a loading problem from an account problem. A blank page, a password error and a verification request have different causes.
Check any proposed mirror against the operator’s current official list. A familiar logo is not proof that an address belongs to the platform.
An authentic mirror should accept the existing account and show the same account data. It is not a new promotion or a fresh account.
Do not enter credentials on an address solely because it appeared in search results, an advert or a direct message.
Once you have a verified working address, save it as a bookmark and revisit the official list when it changes.
This page explains access. The registration button opens the supplied commercial destination; it is not a claim that this domain is an operator mirror.